Patents Assigned to The Nippon Signal Co., Ltd.
  • Publication number: 20200271919
    Abstract: An actuator according to the present invention includes a support 20 that supports a driven unit 10, and outer axis driver units DSa, DSb that are separate and independent from the support 20 and configured to rotate the support 20. This configuration allows providing a sufficient rotational driving force around the outer, second axis AX2 by reducing size and weight of the related rotatable components and thus by reducing rotational moments thereof, and also allows increasing the resonance frequency of the support 20. As such, the actuator according to this embodiment provides a high-performance drive operation such as a raster scanning operation, for example.
    Type: Application
    Filed: September 26, 2018
    Publication date: August 27, 2020
    Applicant: THE NIPPON SIGNAL CO., LTD.
    Inventor: Hiroshi TOSA
  • Patent number: 9821826
    Abstract: A train information announcement system of the present invention includes vehicle radio sets VRS1 and VRS2 which performs wireless communication, and is installed on a train 1 which moves on a railroad track R, wayside radio sets WRS1 to WRS5 arranged along the railroad track R, and an information providing means which provides train information announcements at a station at predetermined timing based on information about a train location obtained by the wireless communication between the vehicle radio sets VRS1 and VRS2 and the wayside radio sets WRS1 to WRS5.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: November 21, 2017
    Assignee: THE NIPPON SIGNAL CO., LTD.
    Inventor: Takeshi Yamada
  • Patent number: 9789891
    Abstract: A train control apparatus includes: a first ground device 22a provided in a first section CZ1; and a second ground device 22b provided in a second section CZ2 continuing from the first section CZ1 in a train travel direction. When a train 10 in the first section CZ1 enters a control transition section ZCR determined using a control section border CZI as a termination end, the first ground device 22a instructs a first vehicle radio set 14r to send a first report signal RR1 to the first ground device 22a in accordance with a first communication condition determined by the first ground device 22a, and instructs a second vehicle radio set 14f to send a second report signal RF2 to the second ground device 22b in accordance with a second communication condition determined by the second ground device 22b.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: October 17, 2017
    Assignee: THE NIPPON SIGNAL CO., LTD.
    Inventors: Naoki Hatazaki, Hideyuki Kato
  • Patent number: 9669853
    Abstract: The train control system includes: an on-board device 3 mounted on a train 2 traveling on a predetermined track 1; a vehicle radio set 4 that transmits and receives information of the on-board device 3; wayside radio sets 5 each of which is disposed at a predetermined location on the ground to transmit information to and receive information from the vehicle radio set 4 information; a ground device 8 placed by the track 1 and connected to the wayside radio set 5; an operation controlling device 12 that transmits operation information of the train 2 to the ground device 8; and an interlocking device 11 that performs an operation control of a turnout 6 for switching tracks. The ground device 8 detects the location of the train 2 on the basis of wireless propagation time between the vehicle radio set 4 and the wayside radio set 5, receives entering track information of the train 2 from the operation controlling device 12, and controls an interval between a preceding train 2 and a following train 2.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: June 6, 2017
    Assignee: THE NIPPON SIGNAL CO., LTD.
    Inventor: Akira Kurita
  • Patent number: 9663125
    Abstract: A train control system of the present invention capable of controlling a train in a plurality of drive modes by a single on-board device, includes an on-board device 4 mounted on a train 2 traveling on a predetermined track 1; a continuous ATP processing unit 11 and an intermittent ATP processing unit 10 that is provided in the on-board device 4 and simultaneously performs processes in a continuous ATP drive mode by a continuous ATP system and an intermittent ATP drive mode by an intermittent ATP system; and a drive mode determining unit 12 that selects either one of process results to be used in a travel control, of the continuous ATP processing unit 11 and the intermittent ATP processing unit 10.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: May 30, 2017
    Assignee: THE NIPPON SIGNAL CO., LTD.
    Inventor: Kenichi Myokei
  • Patent number: 9628998
    Abstract: A wireless communication network system including: mobile radios mounted on a moving body moving along a predetermined route; and a plurality of immobile radios arranged along the route, adjacent immobile radios wirelessly communicating with each other, to transmit information from a transmission source to a terminal by relaying the information. The mobile radios and the immobile radios communicate with each other by a time division multiple access method, in which time synchronization is performed to allow each of the mobile radios and the immobile radios to communicate in an allocated time slot. The mobile radios are disposed on front and rear parts of the moving body and are capable of communicating with each other. When the moving body is between the immobile radios arranged to be capable of wirelessly communicating with each other, the two mobile radios is capable of relaying information propagation between the immobile radios.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: April 18, 2017
    Assignee: THE NIPPON SIGNAL CO., LTD.
    Inventors: Terufumi Yamaguchi, Yuhei Otsuka, Toshihito Shirai, Hideyuki Kato, Masahide Takahashi, Hiroshi Ogihara
  • Patent number: 9581689
    Abstract: A system that reads and writes information from and onto a non-contact information recording medium using an electric wave includes a reader/writer and a measuring unit. The reader/writer includes an antenna configured to transmit an electric wave onto the non-contact information recording medium, a demodulator configured to demodulate a reflected wave obtained by the non-contact information recording medium modulating a part of the electric wave, and a calculator configured to obtain a delay time of the reflected wave. The measuring unit measures a difference in delay times calculated by the calculator, and obtains a change in a distance between the antenna mediating transmission/reception of the electric wave and the non-contact information recording medium.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: February 28, 2017
    Assignee: The Nippon Signal Co., Ltd.
    Inventor: Masahiko Ando
  • Patent number: 9540019
    Abstract: The present invention relates to a train control device. The train control device sets an emergency brake pattern and a regular brake pattern as patterns of maximum speed according to the distance to a stopping point, and outputs a braking command when the train speed exceeds the maximum speed. Then, when the maximum speed defined in the regular brake pattern falls below a set speed, the maximum speed of the regular brake pattern is kept constant for a predetermined distance. After that, the maximum speed is gradually reduced toward a stopping point of the emergency brake pattern. This allows a train to make an approach to a fixed stopping position in an automatic train operation even when the fixed stopping position is located farther than a stopping point of the regular brake pattern, and excessive output of an emergency braking command based on the emergency brake pattern can be reduced.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: January 10, 2017
    Assignee: The Nippon Signal Co., LTD.
    Inventor: Keiichi Saito
  • Patent number: 9505420
    Abstract: A train control system includes: an on-board device 3 mounted on a train 2 travelling on a track 1; a vehicle radio set 7 that transmits and receives travel distance information and speed information of the train 2 obtained by the on-board device 3; a wayside radio set 8 disposed at a predetermined location of the track 1 and transmitting information to and receives information from the vehicle radio set 7; and a ground device 9 connected to the wayside radio set 8, in which the ground device 9 obtains a location of the train 2 based on the travel distance information and the speed information of the train 2 transmitted from the on-board device 3, and sets a safety buffer on each of a travelling direction side of the train 2 and the opposite side thereof, the safety buffer being only set to be longer, during train 2 travelling.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: November 29, 2016
    Assignee: THE NIPPON SIGNAL CO., LTD.
    Inventor: Yasushi Tsukamoto
  • Patent number: 9319163
    Abstract: Mobile radio sets are installed on front and rear parts of a mobile body, one of fixed radio sets is set as a synchronization base station, and the other radio sets including the mobile radio sets are set as synchronization packet relay stations. Each of the relay stations in a synchronization acquiring mode makes a transition to a ground synchronization maintaining mode higher in synchronization accuracy when receiving a synchronization packet without the intervention of the mobile radio sets, or makes a transition to an on-vehicle synchronization maintaining mode lower in synchronization accuracy when receiving a synchronization packet with the intervention of the mobile radio sets, and the relay station in the on-vehicle synchronization maintaining mode makes a transition to the ground synchronization maintaining mode when receiving a synchronization packet from a relay station in the ground synchronization maintaining mode.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: April 19, 2016
    Assignee: THE NIPPON SIGNAL CO., LTD.
    Inventors: Terufumi Yamaguchi, Hiroki Saito, Yuhei Otsuka, Toshihito Shirai
  • Patent number: 9278702
    Abstract: A train control system includes an on-board device 3 mounted on a train 2; a vehicle radio set 4; wayside radio sets 5 that are disposed on a ground; and ground devices 6 disposed in every control sections defined on the track. In each control section, the ground device 6 is connected to the wayside radio sets 5 in the control section. When one ground device 6 fails to transmit information to and receive information from another ground device 6, the one ground device 6 determines that said another ground device 6 has been failed, and then, the one ground device 6 calculates a possible travel distance to a control section of the failed ground device 6 to prevent the train 2 from entering the control section of the failed ground device 6, and then, the one ground device 6 transmits the possible travel distance to the on-board device 3.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: March 8, 2016
    Assignee: THE NIPPON SIGNAL CO., LTD.
    Inventor: Kenichi Myokei
  • Patent number: 9022325
    Abstract: A train control system includes: an on-board device 3 mounted on each of trains 2; a vehicle radio set 4; wayside radio sets 5 disposed on a ground; and a ground device 6 connected to the wayside radio sets 5. The ground device 6 obtains a location information of a train 2 and a location information of a following train 2 based on results of distance measurement based on communication between the wayside radio sets 5 and the vehicle radio sets 4, and the ground device 6 transmits them to an on-board device 3 of the train 2. The on-board device 3 calculates a stop limit position of the following train 2 based on the location information of the train 2 and the location information of the following train 2, and the on-board device 3 transmits the calculated stop limit position to the following train 2.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: May 5, 2015
    Assignee: The Nippon Signal Co., Ltd.
    Inventor: Yasushi Tsukamoto
  • Patent number: 9004413
    Abstract: With respect to each of trains, a ground device 6 detects a train location in the control section on the basis of a propagation time of a radio wave between a vehicle radio set 4 and a wayside radio set 5, in the case in which the ground device 6 determines that the number of trains has reached the controllable number of trains or there is the possibility that the number of trains reaches the controllable number of trains in its own control section, a ground device 6 disposed in an adjacent control section to the control section in which the number of trains is reaching the controllable number of trains, when a train 2 scheduled to travel toward the control section stops in a station 8, prevents departure of the train 2 scheduled to pass through the border of the control section by making the train 2 wait at the station 8.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: April 14, 2015
    Assignee: The Nippon Signal Co., Ltd.
    Inventor: Akira Kurita
  • Patent number: 8998149
    Abstract: A ground device 1 transmits train control information to an on-board device mounted on a train. The ground device 1 receives a train detection signal (TD signal) from a train with an ATC/TD on-board device mounted thereon through loop coils 21 to 2m, and receives a train position signal from a train with a CBTC on-board device mounted thereon through wayside radio sets 61 to 6n. Based on the input train detection signal and train position signal, the ground device 1 detects the position of each train traveling on a route R, generates control information on each train based on the detected position of each train, and converts the control information to an ATC signal and a CBTC signal. The ATC signal is transmitted to the loop coils 21 to 2m through information transmission units 4, and the CBTC signal is transmitted through the wayside radio sets 61 to 6n.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: April 7, 2015
    Assignee: The Nippon Signal Co., Ltd.
    Inventors: Masahide Takahashi, Naoto Hashimoto
  • Patent number: 8985524
    Abstract: An on-board device capable of receiving train control signals from ground-side equipment of train control systems of different types or the like to control the speed of a train and the like appropriately, is provided. An on-board device 10 mounted on a train 1 includes ATC/TD antennas 11a, 11b that receive an ATC signal including train control information from loop coils installed along a route of the train 1, a vehicle radio set 12 that receives a CBTC signal including train control information from wayside radio sets installed along the route, an ATC control unit 141 that controls the train 1 based on the train control information in the ATC signal, a CBTC control unit 142 that controls the train 1 based on the train control information in the CBTC signal, and a selection unit 143 that selects the ATC control unit 141 or the CBTC control unit 142.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: March 24, 2015
    Assignee: The Nippon Signal Co., Ltd.
    Inventors: Masahide Takahashi, Naoto Hashimoto
  • Patent number: 8977414
    Abstract: A train control system of the present invention includes: an on-board device 1 that is mounted on a train and has an vehicle radio set VRS1 capable of performing wireless communication; fixed radio sets (WRS1 to WRS7, and SRS1) that are disposed along the railroad track R and capable of performing wireless communication by a time division multiple access method with the vehicle radio set VRS1; and a ground device 2 that calculates distance from a train A to a stop point before a preceding train B on the basis of the location information of the train A obtained by the wireless communication between the vehicle radio set VRS1 and the fixed radio set. The on-board device 1 generates a stop pattern on the basis of the distance, and performs a travel control so that the train A travels at a speed equal to or less than the stop pattern.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: March 10, 2015
    Assignee: The Nippon Signal Co., Ltd.
    Inventor: Takeshi Yamada
  • Publication number: 20150008293
    Abstract: A train control apparatus includes: a first ground device 22a provided in a first section CZ1; and a second ground device 22b provided in a second section CZ2 continuing from the first section CZ1 in a train travel direction. When a train 10 in the first section CZ1 enters a control transition section ZCR determined using a control section border CZI as a termination end, the first ground device 22a instructs a first vehicle radio set 14r to send a first report signal RR1 to the first ground device 22a in accordance with a first communication condition determined by the first ground device 22a, and instructs a second vehicle radio set 14f to send a second report signal RF2 to the second ground device 22b in accordance with a second communication condition determined by the second ground device 22b.
    Type: Application
    Filed: September 26, 2014
    Publication date: January 8, 2015
    Applicant: THE NIPPON SIGNAL CO., LTD.
    Inventors: Naoki HATAZAKI, Hideyuki KATO
  • Publication number: 20140209755
    Abstract: An on-board device capable of receiving train control signals from ground-side equipment of train control systems of different types or the like to control the speed of a train and the like appropriately, is provided. An on-board device 10 mounted on a train 1 includes ATC/TD antennas 11a, 11b that receive an ATC signal including train control information from loop coils installed along a route of the train 1, a vehicle radio set 12 that receives a CBTC signal including train control information from wayside radio sets installed along the route, an ATC control unit 141 that controls the train 1 based on the train control information in the ATC signal, a CBTC control unit 142 that controls the train 1 based on the train control information in the CBTC signal, and a selection unit 143 that selects the ATC control unit 141 or the CBTC control unit 142.
    Type: Application
    Filed: March 27, 2014
    Publication date: July 31, 2014
    Applicant: THE NIPPON SIGNAL CO., LTD.
    Inventors: Masahide TAKAHASHI, Naoto HASHIMOTO
  • Publication number: 20140214248
    Abstract: A train control system of the present invention includes: an on-board device 1 that is mounted on a train and has an vehicle radio set VRS1 capable of performing wireless communication; fixed radio sets (WRS1 to WRS7, and SRS1) that are disposed along the railroad track R and capable of performing wireless communication by a time division multiple access method with the vehicle radio set VRS1; and a ground device 2 that calculates distance from a train A to a stop point before a preceding train B on the basis of the location information of the train A obtained by the wireless communication between the vehicle radio set VRS1 and the fixed radio set. The on-board device 1 generates a stop pattern on the basis of the distance, and performs a travel control so that the train A travels at a speed equal to or less than the stop pattern.
    Type: Application
    Filed: March 27, 2014
    Publication date: July 31, 2014
    Applicant: THE NIPPON SIGNAL CO., LTD.
    Inventor: Takeshi YAMADA
  • Publication number: 20140209758
    Abstract: The train control system includes: an on-board device 3 mounted on a train 2 traveling on a predetermined track 1; a vehicle radio set 4 that transmits and receives information of the on-board device 3; wayside radio sets 5 each of which is disposed at a predetermined location on the ground to transmit information to and receive information from the vehicle radio set 4 information; a ground device 8 placed by the track 1 and connected to the wayside radio set 5; an operation controlling device 12 that transmits operation information of the train 2 to the ground device 8; and an interlocking device 11 that performs an operation control of a turnout 6 for switching tracks. The ground device 8 detects the location of the train 2 on the basis of wireless propagation time between the vehicle radio set 4 and the wayside radio set 5, receives entering track information of the train 2 from the operation controlling device 12, and controls an interval between a preceding train 2 and a following train 2.
    Type: Application
    Filed: March 27, 2014
    Publication date: July 31, 2014
    Applicant: THE NIPPON SIGNAL CO., LTD.
    Inventor: Akira KURITA